Why do people who eat bird's nest have whiter skin?

Microbrain version 1, bird's nest acid (sialic acid) naturally exists in the body, far more than the amount ingested through bird's nest.

2. Epidermal growth factor and colony stimulating factor can not regulate skin and hematopoietic function through diet.

3, the blood swallow is not a swallow crying blood, which is equivalent to being stained with rust.

4. The high price of bird's nest, folk custom and advertising marketing can easily induce the placebo effect.

5, bird's nest consumption is low, even fake bird's nest is unpalatable.

Chinese medicine pays special attention to food tonic, among which one tonic has a prominent position.

Since it was introduced to China in the Ming Dynasty, it has been loved by the royal family and dignitaries, and it is almost an indispensable prop in costume dramas. This is the Bird's Nest.

Let's first appreciate its performance in film and television works.

Bird's Nest is a mixture of saliva and feathers secreted by several swift species in Jin Siyan during nesting, which is mainly produced in some areas of Southeast Asia and southern China.

It is said that bird's nest has beauty beauty and anti-aging effects, so it is especially popular with female consumers.

If these effects are not psychological comfort, it is bound to rely on some real materials, rather than the illusory concept of yin and yang and five elements, which should be the most basic materialism.

For bird's nest, conventional nutrients obviously cannot support its high price and magical effect.

Are there any special ingredients at work?

sialic acid

The iconic component of bird's nest, also known as bird's nest essence, is a kind of thing called bird's nest acid, and it is also an important indicator to judge the quality of bird's nest.

At first glance, you will think it is a unique ingredient of bird's nest. In fact, it also has a name called sialic acid.

If you eat bird's nest to supplement sialic acid, it may not be worthwhile, because pure sialic acid is at least 10 times cheaper than it.

Sialic acid is a derivative of sugar containing 9 carbon atoms, which was first discovered and named when studying bovine salivary mucin.

At present, there are about 50 kinds of sialic acid, among which N- acetylneuraminic acid is contained in human body, that is, bird's nest acid and sialic acid in people who sell bird's nest.

Sialic acid rarely exists alone, usually combines with protein and lipids, or exists in the form of oligosaccharides, and most commonly forms glycoprotein, which is also the form of sialic acid in bird's nest.

In animal experiments, sialic acid has certain anti-inflammatory and immunomodulatory effects.

However, the experimental dose is much larger than that of eating bird's nest, so these functions may not be replicated in people, and there is no conclusive evidence so far.

In addition, the serum sialic acid content of patients with malignant tumor is relatively high, and sialic acid is also related to tumor metastasis, so don't deify it.

The sialic acid content of dried bird's nest is about 10%. According to the usual eating method, you only eat 3-5g a day, which is about 300-500mg of sialic acid.

However, many foods contain a small amount of sialic acid, and the sialic acid content in breast milk, especially colostrum, is relatively high, about per liter 1400-2 100 mg.

Japanese research data show that a black egg contains more than 200 milligrams of sialic acid, and eating two eggs a day is comparable to bird's nest, which is much cheaper.

In addition, an ordinary egg contains10-20mg of sialic acid, and the sialic acid content in milk is about 50mg per liter. Livestock and poultry meat generally also contains a small amount of sialic acid.

In fact, we also have a lot of sialic acid in our bodies. For example, there are 40-60 mg of sialic acid in the saliva secreted by adults every day.

In this way, eating a small bowl of bird's nest is equivalent to drinking a big bucket of saliva.

In addition, the content of sialic acid in normal human serum is about 45-75 mg/100 ml, and roughly calculated, there is about 1800-3000 mg in whole body blood.

If sialic acid attached to human cells is counted, it is estimated that the amount provided by bird's nest is not worth mentioning.

Epidermal growth factor and cerebrospinal fluid

EGF (epidermal growth factor), as its name implies, can stimulate epidermal growth.

This thing is the material basis of the "beauty" of bird's nest promoted by many merchants, and the scientist who found it in mice won the Nobel Prize!

However, EGF is quite abundant in your body, which should be much larger than bird's nest.

More importantly, EGF is a polypeptide consisting of 53 amino acids. Whether eaten raw or stewed, it will be cut into amino acid fragments in the gastrointestinal tract and lose its original physiological activity.

In addition, EGF is very picky about temperature, and it will be inactivated even at room temperature, so even if you wash your face with bird's nest, it is useless.

CSF (colony stimulating factor) is a colony stimulating factor, which mainly helps hematopoietic stem cells differentiate and proliferate. Will it make your blood rosy?

Not exactly.

Because it is also a kind of protein, it can't bring you any physiological function through diet, just like EGF.

(Note: These two things are very common in the propaganda copy of the Bird's Nest, but there are almost no reliable data in the literature. )

Although the protein content of other dried bird's nests is as high as 50%, considering that only 3-5g is eaten every day, the small amount of protein has little "nourishing" value.

What's more, it is still an incomplete protein lacking hydroxyproline. Its nutritional value is really incomparable with eggs, and it is far less than milk and lean meat.

Such as sugar, free amino acids, minerals and trace elements, can only be said to be insignificant.

Some people are superstitious about blood swallows, saying that they vomit blood and think that they can replenish blood.

In fact, that color comes from the erosion of minerals in the rock wall where swallows nest, mainly iron.

But this kind of iron, like rust, belongs to trivalent inorganic iron with the worst iron supplement effect. It is better to eat lean meat!

If you always think that some magical ingredients in bird's nest may not be detected, or that modern science is not enough to reveal the efficacy of bird's nest, then I have nothing to say.

Since you are so convinced, I believe that strong psychological comfort will bring you some benefits.

After all, things are rare and expensive, and there are always reasons for being expensive. After spending so much money, you must believe that it has some benefits.

However, is it necessary to change the propaganda copy that uses bird's nest acid, EGF and CSF to fool consumers?

Of course, you can rest assured that eating bird's nest won't do any harm, and even fake bird's nest is unlikely to go wrong.

Where does the Bird's Nest effect come from?

Why do people who eat bird's nest have fair and shiny skin?

Is it wrong that our ancestors have accumulated so many years of experience?

In fact, this is largely a logical fallacy.

People who used to be able to afford bird's nest were dignitaries. They eat well and have no burden. Of course, they are fat for nothing and their living conditions are better than ordinary people.

How do these people compare with the ordinary people who catch up with the next meal? How does it compare with those weather-beaten old farmers?

On the other hand, if the bird's nest really has the miraculous effect of beauty beauty, will someone in the beauty salon have Botox and hyaluronic acid for wrinkle removal and micro-plastic surgery?

In an instant bird's nest advertisement, the spokesman said, "I only choose XXX to eat bird's nest", without mentioning any effect, but the glamorous image undoubtedly implies that "the skin of our XXX bird's nest is so good".

But in fact, watching her take a selfie without makeup can only be said to be very general. I don't know what year the photo was taken. She is 52 years old now.

Some people say how tired she is in the entertainment circle, and all kinds of heavy makeup hurt her skin, which is already very good.

But people spend seven figures on beauty every year, and there are all kinds of personal care. ...

Bird's nest is nothing if it is maintained to this extent. ...

A netizen once left me a message "You said it was useless because you didn't eat a good bird's nest" and "Don't beep if you can't afford it".

Emmm, rich people have a strong sense of superiority ... all over the screen. ...

Perhaps this sense of superiority is the fundamental reason for them to "hold their heads high and be beautiful and confident women", hahaha.